2 * @file kprobe/swap_kprobes_deps.h
3 * @author Alexey Gerenkov <a.gerenkov@samsung.com> User-Space Probes initial implementation;
4 * Support x86/ARM/MIPS for both user and kernel spaces.
5 * @author Ekaterina Gorelkina <e.gorelkina@samsung.com>: redesign module for separating core and arch parts
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Copyright (C) Samsung Electronics, 2006-2010
27 * @section DESCRIPTION
29 * SWAP kprobe kernel-dependent dependencies.
32 #ifndef _SWAP_KPROBES_DEPS_H
33 #define _SWAP_KPROBES_DEPS_H
35 #include <linux/version.h> /* LINUX_VERSION_CODE, KERNEL_VERSION() */
36 #include <linux/sched.h>
38 #include <linux/hugetlb.h>
39 #include <linux/mempolicy.h>
40 #include <linux/highmem.h>
41 #include <linux/pagemap.h>
42 #include <ksyms/ksyms.h>
44 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
45 #define DECLARE_NODE_PTR_FOR_HLIST(var_name)
46 #define swap_hlist_for_each_entry_rcu(tpos, pos, head, member) \
47 hlist_for_each_entry_rcu(tpos, head, member)
48 #define swap_hlist_for_each_entry_safe(tpos, pos, n, head, member) \
49 hlist_for_each_entry_safe(tpos, n, head, member)
50 #define swap_hlist_for_each_entry(tpos, pos, head, member) \
51 hlist_for_each_entry(tpos, head, member)
52 #else /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0) */
53 #define DECLARE_NODE_PTR_FOR_HLIST(var_name) struct hlist_node *var_name
54 #define swap_hlist_for_each_entry_rcu(tpos, pos, head, member) \
55 hlist_for_each_entry_rcu(tpos, pos, head, member)
56 #define swap_hlist_for_each_entry_safe(tpos, pos, n, head, member) \
57 hlist_for_each_entry_safe(tpos, pos, n, head, member)
58 #define swap_hlist_for_each_entry(tpos, pos, head, member) \
59 hlist_for_each_entry(tpos, pos, head, member)
61 #define list_first_entry_or_null(ptr, type, member) \
62 (!list_empty(ptr) ? list_first_entry(ptr, type, member) : NULL)
64 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0) */
66 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 12))
67 #define synchronize_sched synchronize_kernel
72 * swap_preempt_enable_no_resched()
74 #if (defined(MODULE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)))
76 #ifdef CONFIG_PREEMPT_COUNT
77 #define swap_preempt_enable_no_resched() \
80 preempt_count_dec(); \
82 #else /* !CONFIG_PREEMPT_COUNT */
83 #define swap_preempt_enable_no_resched() barrier()
84 #endif /* CONFIG_PREEMPT_COUNT */
86 #else /* !(defined(MODULE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
87 #define swap_preempt_enable_no_resched() preempt_enable_no_resched()
88 #endif /* !(defined(MODULE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
91 #if LINUX_VERSION_CODE > KERNEL_VERSION(3, 1, 0)
92 #define task_job(task) (task->jobctl)
93 #else /* LINUX_VERSION_CODE > KERNEL_VERSION(3, 1, 0) */
94 #define task_job(task) (task->group_stop)
95 #endif /* LINUX_VERSION_CODE > KERNEL_VERSION(3, 1, 0) */
99 /* --------------------- Declaration of module dependencies ----------------- */
101 #define DECLARE_MOD_FUNC_DEP(name, ret, ...) ret(*__ref_##name)(__VA_ARGS__)
102 #define DECLARE_MOD_CB_DEP(name, ret, ...) ret(*name)(__VA_ARGS__)
105 /* ---------------- Implementation of module dependencies wrappers ---------- */
107 #define DECLARE_MOD_DEP_WRAPPER(name, ret, ...) ret name(__VA_ARGS__)
108 #define IMP_MOD_DEP_WRAPPER(name, ...) \
110 return __ref_##name(__VA_ARGS__); \
114 /* --------------------- Module dependencies initialization ----------------- */
116 #define INIT_MOD_DEP_VAR(dep, name) \
118 __ref_##dep = (void *) swap_ksyms(#name); \
119 if (!__ref_##dep) { \
120 DBPRINTF(#name " is not found! Oops. Where is it?"); \
125 #define INIT_MOD_DEP_CB(dep, name) \
127 dep = (void *) swap_ksyms(#name); \
129 DBPRINTF(#name " is not found! Oops. Where is it?"); \
135 int init_module_dependencies(void);
138 #if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
140 int swap_access_process_vm(struct task_struct *tsk, unsigned long addr,
141 void *buf, int len, int write);
143 # define read_proc_vm_atomic(tsk, addr, buf, len) \
144 swap_access_process_vm(tsk, addr, buf, len, 0)
145 # define write_proc_vm_atomic(tsk, addr, buf, len) \
146 swap_access_process_vm(tsk, addr, buf, len, 1)
148 #else /* defined(CONFIG_ARM) || defined(CONFIG_ARM64) */
150 int access_process_vm_atomic(struct task_struct *tsk, unsigned long addr,
151 void *buf, int len, int write);
153 # define read_proc_vm_atomic(tsk, addr, buf, len) \
154 access_process_vm_atomic(tsk, addr, buf, len, 0)
155 # define write_proc_vm_atomic(tsk, addr, buf, len) \
156 access_process_vm_atomic(tsk, addr, buf, len, 1)
158 #endif /* defined(CONFIG_ARM) || defined(CONFIG_ARM64) */
160 int page_present(struct mm_struct *mm, unsigned long addr);
162 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 3, 0)
163 unsigned long swap_do_mmap(struct file *file, unsigned long addr,
164 unsigned long len, unsigned long prot,
165 unsigned long flags, vm_flags_t vm_flags,
166 unsigned long pgoff, unsigned long *populate);
167 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
168 unsigned long swap_do_mmap_pgoff(struct file *file, unsigned long addr,
169 unsigned long len, unsigned long prot,
170 unsigned long flags, unsigned long pgoff,
171 unsigned long *populate);
172 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0)
173 unsigned long swap_do_mmap_pgoff(struct file *file, unsigned long addr,
174 unsigned long len, unsigned long prot,
175 unsigned long flags, unsigned long pgoff);
176 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0) */
178 #if LINUX_VERSION_CODE > KERNEL_VERSION(3, 16, 0)
179 #define swap_hlist_add_after(node, prev) hlist_add_behind(node, prev)
180 #else /* LINUX_VERSION_CODE > KERNEL_VERSION(3, 16, 0) */
181 #define swap_hlist_add_after(node, prev) hlist_add_after(node, prev)
182 #endif /* LINUX_VERSION_CODE > KERNEL_VERSION(3, 16, 0) */
184 #if LINUX_VERSION_CODE > KERNEL_VERSION(3, 18, 0)
185 #define __get_cpu_var(var) (*this_cpu_ptr(&(var)))
186 #endif /* LINUX_VERSION_CODE > KERNEL_VERSION(3, 18, 0) */
188 #endif /* _SWAP_KPROBES_DEPS_H */